Gas Train - Riello 20047690 Installation, Use And Maintenance Instructions

4.8.2

Gas train

This has been type-approved in accordance with regulation NFPA
54/ANSI Z223.1 National Fuel Gas Code, NFPA 58 Liquefied Pe-
troleum Gas Code, and International Fuel Gas Code, CAN/CGA
B149.1 & B149.2 Installation Codes, and is supplied as standard
(Fig. 16).
1 2
Key (Fig. 16)
1 Gas supply
2 Manual valve
3 Valve including:
- F screen/strainer
- VS 1st SSOV
- R pressure regulator
- VR 2nd SSOV
L Gas train supplied
P1 Upstream gas pressure test point
P2 Downstream gas pressure test point
LGP Low gas pressure switch
20051011
Installation
3
V1
R
F
LGP
P1
Before carrying out maintenance, cleaning or
checking operations, identify and close the manual
shut-off valve on the gas supply drop-line to the bur-
ner.
2
V2
P2
22 GB
20059529
Fig. 16